How do I disable YAHOO toolbar? It is useless to me

There are already other toolbars on top of the screen. Yahoo
toolbar has features connecting to ebay, shopping, surfside, &
this is all useless. Using Windows 7 and XP Professional.
Yahoo toolbar has no choice of disconnecting it. Thank you
Firefox 8.0.1 Windows XP

There are already other toolbars on top of the screen. Yahoo
toolbar has features connecting to ebay, shopping, surfside, &
this is all useless. Using Windows 7 and XP Professional.
Yahoo toolbar has no choice of disconnecting it. Thank you
Firefox 8.0.1 Windows XP